Table 3 Stress levels and experimental results for 8 groups of specimens (Unit: MPa).

From: Surface roughness effect on fatigue strength of aluminum alloy using revised stress field intensity approach

No

A-1

A-2

A-3

B-1

B-2

B-3

C-1

C-2

1

190/+

190/−

190/−

190/×

190/−

190/−

190/−

190/−

2

182/−

198/−

198/−

182/+

198/+

198/−

198/※

198/−

3

190/+

206/×

206/−

174/+

190/−

206/−

190/※

206/−

4

182/+

198/−

214/+

166/−

198/×

214/−

182/−

214/−

5

174/+

206/−

206/−

174/−

190/−

222/−

190/−

222/※

6

166/−

214/−

214/−

182/+

198/−

230/−

198/−

214/−

7

174/+

222/×

222/+

174/+

206/×

238/×

206/※

222/−

8

166/−

214/+

214/−

166/−

198/−

230/+

198/※

230/−

9

174/+

206/−

222/+

174/+

206/+

222/×

190/※

238/※

10

166/−

214/−

214/+

166/−

198/−

214/+

182/※

230/※

11

174/−

222/+

206/−

174/−

206/−

206/−

174/※

222/※

12

182/−

214/−

214/−

182/×

214/−

214/+

166/−

214/※

13

190/−

222/×

222/−

174/+

222/−

206/−

174/−

206/−

14

198/+

214/+

230/−

166/+

230/−

214/+

182/−

214/−

15

190/+

206/+

238/×

158/−

238/×

206/+

190/−

222/−